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<div id="overview"><a href="../../../../../../apidocs/org/inftel/tms/mobile/receivers/PassiveLocationChangedReceiver.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2011 Google Inc.</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * you may not use this file except in compliance with the License.</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  
<a class="jxr_linenumber" name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> org.inftel.tms.mobile.receivers;
<a class="jxr_linenumber" name="18" href="#18">18</a>  
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> android.content.Context.MODE_PRIVATE;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.inftel.tms.mobile.TmsConstants.DEFAULT_RADIUS;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.inftel.tms.mobile.TmsConstants.SHARED_PREFERENCE_FILE;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.inftel.tms.mobile.TmsConstants.SP_KEY_LAST_FENCES_CHECK_LAT;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.inftel.tms.mobile.TmsConstants.SP_KEY_LAST_FENCES_CHECK_LNG;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.inftel.tms.mobile.TmsConstants.SP_KEY_LAST_FENCES_CHECK_TIME;
<a class="jxr_linenumber" name="25" href="#25">25</a>  
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.inftel.tms.mobile.TmsConstants;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.inftel.tms.mobile.services.TrackingService;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.inftel.tms.mobile.util.LegacyLastLocationFinder;
<a class="jxr_linenumber" name="29" href="#29">29</a>  
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> android.content.BroadcastReceiver;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> android.content.Context;
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> android.content.Intent;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> android.content.SharedPreferences;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> android.location.Location;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> android.location.LocationManager;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> android.util.Log;
<a class="jxr_linenumber" name="37" href="#37">37</a>  
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * This Receiver class is used to listen for Broadcast Intents that announce</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * that a location change has occurred while this application isn't visible.</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * Where possible, this is triggered by a Passive Location listener.</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/inftel/tms/mobile/receivers/PassiveLocationChangedReceiver.html">PassiveLocationChangedReceiver</a> <strong class="jxr_keyword">extends</strong> BroadcastReceiver {
<a class="jxr_linenumber" name="44" href="#44">44</a>  
<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">static</strong> String TAG = <span class="jxr_string">"PassiveLocationChangedReceiver"</span>;
<a class="jxr_linenumber" name="46" href="#46">46</a>  
<a class="jxr_linenumber" name="47" href="#47">47</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment">     * When a new location is received, extract it from the Intent and use it to</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment">     * start the Service used to update the list of nearby places. This is the</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment">     * Passive receiver, used to receive Location updates from third party apps</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment">     * when the Activity is not visible.</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>      @Override
<a class="jxr_linenumber" name="54" href="#54">54</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> onReceive(Context context, Intent intent) {
<a class="jxr_linenumber" name="55" href="#55">55</a>          Log.d(TAG, <span class="jxr_string">"PassivlyLocationChanged called."</span>);
<a class="jxr_linenumber" name="56" href="#56">56</a>          String key = LocationManager.KEY_LOCATION_CHANGED;
<a class="jxr_linenumber" name="57" href="#57">57</a>          Location location = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="58" href="#58">58</a>  
<a class="jxr_linenumber" name="59" href="#59">59</a>          <strong class="jxr_keyword">if</strong> (intent.hasExtra(key)) {
<a class="jxr_linenumber" name="60" href="#60">60</a>              Log.d(TAG, <span class="jxr_string">"Location changed from a passive provider."</span>);
<a class="jxr_linenumber" name="61" href="#61">61</a>              <em class="jxr_comment">// ...so we can extract the location directly.</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>              location = (Location) intent.getExtras().get(key);
<a class="jxr_linenumber" name="63" href="#63">63</a>          } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="64" href="#64">64</a>              Log.d(TAG, <span class="jxr_string">"Location changed from a recurring alarm."</span>);
<a class="jxr_linenumber" name="65" href="#65">65</a>              <em class="jxr_comment">// This update came from a recurring alarm (legacy location update).</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>              <em class="jxr_comment">// We need to determine if there has been a more recent Location</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>              <em class="jxr_comment">// received than the last location we used.</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  
<a class="jxr_linenumber" name="69" href="#69">69</a>              <em class="jxr_comment">// Get the best last location detected from the providers.</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>              <a href="../../../../../org/inftel/tms/mobile/util/LegacyLastLocationFinder.html">LegacyLastLocationFinder</a> lastLocationFinder = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/inftel/tms/mobile/util/LegacyLastLocationFinder.html">LegacyLastLocationFinder</a>(context);
<a class="jxr_linenumber" name="71" href="#71">71</a>              location = lastLocationFinder.getLastBestLocation(TmsConstants.MAX_DISTANCE,
<a class="jxr_linenumber" name="72" href="#72">72</a>                      System.currentTimeMillis() - TmsConstants.MAX_TIME);
<a class="jxr_linenumber" name="73" href="#73">73</a>              SharedPreferences prefs = context.getSharedPreferences(SHARED_PREFERENCE_FILE,
<a class="jxr_linenumber" name="74" href="#74">74</a>                      MODE_PRIVATE);
<a class="jxr_linenumber" name="75" href="#75">75</a>  
<a class="jxr_linenumber" name="76" href="#76">76</a>              <em class="jxr_comment">// Get the last location we used to check fences.</em>
<a class="jxr_linenumber" name="77" href="#77">77</a>              <strong class="jxr_keyword">long</strong> lastTime = prefs.getLong(SP_KEY_LAST_FENCES_CHECK_TIME, Long.MIN_VALUE);
<a class="jxr_linenumber" name="78" href="#78">78</a>              <strong class="jxr_keyword">float</strong> lastLat = prefs.getFloat(SP_KEY_LAST_FENCES_CHECK_LAT, Float.MIN_VALUE);
<a class="jxr_linenumber" name="79" href="#79">79</a>              <strong class="jxr_keyword">float</strong> lastLng = prefs.getFloat(SP_KEY_LAST_FENCES_CHECK_LNG, Float.MIN_VALUE);
<a class="jxr_linenumber" name="80" href="#80">80</a>              Location lastLocation = <strong class="jxr_keyword">new</strong> Location(TmsConstants.CONSTRUCTED_LOCATION_PROVIDER);
<a class="jxr_linenumber" name="81" href="#81">81</a>              lastLocation.setLatitude(lastLat);
<a class="jxr_linenumber" name="82" href="#82">82</a>              lastLocation.setLongitude(lastLng);
<a class="jxr_linenumber" name="83" href="#83">83</a>  
<a class="jxr_linenumber" name="84" href="#84">84</a>              <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_comment">             * Check if the last location detected from the providers is either</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_comment">             * too soon, or too close to the last value we used. If it is within</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_comment">             * those thresholds we set the location to null to prevent the</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_comment">             * update Service being run unnecessarily (and spending battery on</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_comment">             * data transfers). El objetivo de esta comprobacion es evitar que</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_comment">             * la misma localizacion se procese varia veces, ya que</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_comment">             * LegacyUpdateLocationRequester utiliza una alarma recurrente que</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_comment">             * puede lanzarse sin cambios en la localizacion.</em>
<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_comment">             */</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>              <strong class="jxr_keyword">if</strong> ((lastTime &gt; System.currentTimeMillis() - TmsConstants.PASSIVE_LOCATION_MAX_TIME)
<a class="jxr_linenumber" name="95" href="#95">95</a>                      || (lastLocation.distanceTo(location) &lt; TmsConstants.PASSIVE_LOCATION_MAX_DISTANCE)) {
<a class="jxr_linenumber" name="96" href="#96">96</a>                  location = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="97" href="#97">97</a>              }
<a class="jxr_linenumber" name="98" href="#98">98</a>          }
<a class="jxr_linenumber" name="99" href="#99">99</a>  
<a class="jxr_linenumber" name="100" href="#100">100</a>         <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_comment">         * Start the Service used to find nearby points of interest based on the</em>
<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_comment">         * last detected location.</em>
<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_comment">         */</em>
<a class="jxr_linenumber" name="104" href="#104">104</a>         <strong class="jxr_keyword">if</strong> (location != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="105" href="#105">105</a>             Log.d(TAG, <span class="jxr_string">"Passively tracking location"</span>);
<a class="jxr_linenumber" name="106" href="#106">106</a>             Intent checkServiceIntent = <strong class="jxr_keyword">new</strong> Intent(context, TrackingService.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="107" href="#107">107</a>             checkServiceIntent.putExtra(TmsConstants.EXTRA_KEY_LOCATION, location);
<a class="jxr_linenumber" name="108" href="#108">108</a>             checkServiceIntent.putExtra(TmsConstants.EXTRA_KEY_RADIUS, DEFAULT_RADIUS);
<a class="jxr_linenumber" name="109" href="#109">109</a>             checkServiceIntent.putExtra(TmsConstants.EXTRA_KEY_FORCETRACK, false);
<a class="jxr_linenumber" name="110" href="#110">110</a>             context.startService(checkServiceIntent);
<a class="jxr_linenumber" name="111" href="#111">111</a>         }
<a class="jxr_linenumber" name="112" href="#112">112</a>     }
<a class="jxr_linenumber" name="113" href="#113">113</a> }
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